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No. 626,375. Patented June 6,1899, P. GLUD & C. 0. NIELSEN. SEL F GENERATING VAPOR BURNER.

(Application filed Aug. 1, 1895.)

(No Model.)

me NuRms PETERS co.. PHOfO-LIYHKL. wsmusron. b, c.

UNrrnn STATES PATENT OFFICE,

POUL GLUD AND CARL O. NIELSEN, OF COPENHAGEN, DENMARK.

SELF-G EN ERATING VAPOR-BURNER.

SPECIFICATION forming part of Letters Patent No. 626,375, dated June 6, 1899.

Application filed August 1, 1898. Serial No. 687,429. (No model.)

To all whom, it nm concern:

Be it known that we, POUL GLUD and CARL O. NIELSEN, subjects ofthe KingofDen mark, residing at Copenhagen, in the Kingdom of Denmark, have invented certain new and use ful Improvements in Self-GeneratingVapor- Burners; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the acco'mpanyin drawings, and to letters of reference marked thereon, which form a part of this specification.

The invention has relation to self-generating vapor-burners. In these burners as heretofore constructed the generator has been ar ranged relatively to the burner tip or nozzle so as to lie in advance of the latter or within or at least very near the zone of combustion, and this requires a somewhat complex arrangement of feed and vapor pipes, the former extending from the source of supply beyond the burner tip or nozzle to the generator and the vapor-pipes extending back from the generator to the burner.

It is well known that in the distillation or vaporization of volatile combustible liquids, such as the hydrocarbons, solid residues are formed, such as carbon and carbon compounds, which adhere to the walls of the pipes and generator, become very hard, and rapidly foul the same to such an extent as to necessitate frequent cleansing, adifticult and tedious operation, owing to the relative arrangement of the generator, the burner, and the feed and vapor pipes, and one which in many cases can not be performed by the general public. Furthermore, self-generating burners such as described are not readily applicable to portable heating apparatus in the form of lamps or the like, while the use of volatile hydrocarbons by careless and inexperienced persons is at all times more or less dangerous.

Our invention has for its object the provision of means whereby the above difficulties are effectually avoided and whereby the construction of the burner is very much simplified and cheapened, as well as adapted for use with stationary or portable supply reservoirs or founts and the danger of explosion minimized; but that our invention may be fully understood we will describe the same in detail, reference being had to the accompanying drawings, in which Figure 1 is a vertical central section of our improved self-generating vapor-burner combined with a supply reservoir or fount. Fig. 2 is a top plan view of the burner proper. Fig. 3 is an elevation, and Fig. 4 a top plan view, of the generator detached.

A indicates the fount, which is provided with a pump B, whereby air can be forced into the fount and the liquid fed to the generator by air-pressure. This pump may be of any Well-known construction and need, therefore, not be particularly described, as this is a wellknown feature in illuminating apparatus in which the combustible is fed to the burner by air-pressu re.

An open-ended feed-tube 0 projects into the fount nearly to its bottom and is internally screw-threaded at its upper end, into which latter end is screwed the lower end of the generator G.

As shown particularly in Fig. 3, the generator consists of a hollow cylindrical body closed at its lower end and externally screw-threaded for a portion of its length, so as to adapt it to be screwed into the upper end of the tube 0 and to have screwed thereto the burner-tube D. The generator G is further provided with an external spiral channel I, which communicates at its lower end with a cross-channelt' and at its upper end with the interior of the generator through a notch or radial channel t", Fig. 4.

The burner-tube D is screw-threaded in ternally at both ends to screw onto the generator G and to have screwed thereinto the burner nozzle or tip M, constructed in the form of a cap for, and that seats on, the upper end of the generator G. The upper end of the burnertube D is expanded in the form of an inverted cone D, which has a circular row of airports K slightly above the burner-orifice E, and in the upper Wider end, or base, of the cone is seated (preferably removably) a spreader plate H, that not only spreads the flameinto a circular sheet, but also forms the top of a combustion-chamber, suffioient air being drawn into the same through the ports K to produce an intensely-hot flame. The whole of the conical upper portion of the burner-tube, as well erator is vaporized before it reaches the gen- I erator-chamber F.

' It is obvious that with a self-generating burner constructed as described an explosion .of the fountis not to be feared, as no vapor has access thereto, while back-tire through the tortuous channel I is practically impossible.

- For the purpose of starting the burner we provide a cup 0 for the reception of alcohol or other readily-inflammable liquid.

and generator, the'b urner-tu'be D is unscrewed from the feed-tube 0, together with the generator G, when the latter can readily be unscrewed from the burner-tube by means of a screw-driver inserted into the cross-notch 1', thereby affording access to the interior of the generator and to its feed-channel, as well as to the interior of the burner-tip and its jetaperture, to which latter access is also had from the oppositeenlarged end of said burnertube afterremoval of the spreader-plate H.

It is obvious that the vaporizable combustible liquid may be fed to the feed-tube O by gravity instead of air-pressure.

Having thus described our invention, what we claim as new therein, and desire to secure by Letters Patent, is

1. Aself-generatingvapor-burner, comprisingaliquid-fuel feed-pipe, aburner-tip seated in its outlet, a vapor-generating chamber fitting fluid-tight into said pipe, said chamber open at its end facing the burner-tip and closed at its, opposite end, and a fuel-feed passage between the pipe and chamber leading from the lower end of the latter into its upper end for the purpose set forth.

2. Aself-generating vapor-burner comprisinga liquid-fuel feed-pipe, a burner-tip seated in its outlet, a vapor-generating chamberfitting fluid-tight in said pipe, said chamber open at its end facing the burner-tip and closed at its opposite end, and a tortuous or sinuous fuel-feed passage between the pipe and chamber leading from the lower end of the latter into its upper end, for the purpose set forth.

3. In a self-generating vapor-burner, the

combination with a liquid-fuel feed-pipe and a burner-tube carrying a burner and adapted to abut against the feed-pipe, of a hollow cylindrical vapor-generator inside the tube and feed-pipe, .a channel on the exterior of the vapor-generator, extending from the bottom to the top thereof and leading from the feeding a feedpipe, a burnertube abutting against the end of said pipe, a vapor-generator extending into and locking together the abutting ends of said tube and pipe, a spiral feed-channel extending from the feed-pipe to the interior of the generator, and a nozzle i fed by and abutting against the generator and feeding the burner, substantially as set forth.

5. A self-generatin g vapor-burner, comprisin g a liquid-fuel feed-pipe, a burner-tube carrying a burner, and a generator consisting of a cylindrical chambered body fittinginto and locking together the proximate ends of said pipe and tube and provided with an external If it becomes necessary to cleanse the bu rner spiral feed-channel in communication at one end with the supply-pipe and at the other end with the chamber of the generator, for the purpose set forth.

6. Aself-generating vapor-burner, comprising-a liquid-fuel feed-pipe, a burner-tube carrying a burner, and avapor-generator consisting of a hollow cylinder closed at its lower end and adapted to screw into the proximate ends of said pipe 'and tube with its open end abutting against the burner, said generator provided with a spiral external feed-channel in communication with the interior of the generator and with the supply-pipe respectively, for the purpose set forth.

7. Aself-generating vapor-burner comprising a liquid-fuel feed-pipe, a burner-tube, a burner screwed in one end thereof, and a vapor-generatorconsisting of a hollow cylinder closed at one end and adapted to be screwed into the proximate ends of said pipe and tube, with its open end abutting against the burner, said generator provided with an external spiral feed-channel and with a crossnotch in its closed end, one end of saidfeedchannel communicating with the interior of the generator and the other end with said cross-notch, for the purpose set forth.

8. In a self-generating vapor-burner, the combination with a liquid-fuel feed-pipe and aburner-tube carrying a burner-tip M and expanding from said burner-tip into a conical body D, a spreader-plate at the outlet of said body adapted to spread the flame into a circular sheet, said conical body provided with air-ports K; of a vapor-generator consisting of a hollow cylinder adapted to be screwed int-o the proximate ends of the pipe and tube, and provided with an external spiral feedchannel in communication with its interior and with the feed-pipe respectively, for the purpose set forth.

In testimony that we claim the foregoing as our invention we have signed our names in presence of two subscribing witnesses.

POUL GLUD.

CARL O. NIELSEN.

Witnesses:

FREDERIK- NoRLow, JULEs BLoM.

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